Identify This Equipment

[Bob Bufkin]

Spent the afternoon doing some railfanning at Alexandria, VA and in Bowie, MD.  Here's a shot where the Pope's Creek branch goes south.  If you look at the upper right hand corner at the top of the cat pole you'll see a round dish (sort of like a microwave dish).  There were quite a few of these on the poles.  Do not remember seeing these before.  Anyone know what they are and what they are used for?

[choochin3]

Hey Bob,
Those are super bright lights to illuminate the interlockings.
Amtrak put some up at the Winans plant on SW Blvd. about 3 years ago.
I guess they are to deter terrorists,or tresspassers.
I believe they are sensor activated.

Carl T.

[Bob Bufkin]

Thanks.  Didn't look like lights - more like some kind of comm units.
Bob